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In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0315 s, during which time it experiences an acceleration of 309 m/s2. The ball is launched at an angle of 57.8° above the ground. Determine the
(a) horizontal and
(b) vertical components of the launch velocity.
The vapor pressure of benzene is 100 mm Hg at 26.1 C and 400 mm Hg at 60.6 C. Estimate the heat of vaporazitaion of benzene in this temperature range
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 2.0 cm and released. If the spring constant is 85 N/m, what is the magnitude of spring force acting on the toy at the moment i..
Net horizontal force due to rolling friction
The barrel has a length of 0.60 m and an opening whose radius is 2.8 10-3 m. A bullet (mass = 2.7 10-3 kg) has a speed of 380 m/s after passing through this barrel. Ignore friction and examine the average pressure of the expanding gas.
How many rulings must a 4.22-cm-wide diffraction grating have to resolve the wavelengths 415.544, At what angle are the second order maxima found
A large tank is filled with methane gas at a concentration of 0.690 kg/m3. The valve of a 2.00-m pipe connecting the tank to the atmosphere is inadvertantly left open for 11.0 hours. determine the cross-sectional area of the pipe
A diverging lens (f = -10 cm) is located 20.0 cm to the left of a converging lens (f = 31.5 cm). A 3.00 cm tall object stands to the left of the diverging lens, What is the height of the final image
A 115 V electric iron draws 5.57 A of current. How much heat is developed per hour, What is the temperature of the bath
what will be observed on the screen? a fuzzy image is visible no image is visible on the screen a clear image slightly smaller than the original image is visible a clear image slightly larger than the original image is visible.
A small conducting spherical shell withinner radius a and outer radius b is concentric with a larger conducting spherical shell with inner radius c and outer radiusd, calculate the electric field (magnitude and direction) in termsof..
A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. Determine the ratio of the energy used by the blow-dryer in 17 minutes to the energy used by the vacuum cleaner in 46 minutes
An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60.0 percent of the energy usage, what altitude change can a rider achieve when driving in hilly terrain, if the rider and scoote..
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